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Finding the Third Proportional to 3,946 and 5,519

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Solution

The third proportional to 3,946 and 5,519 is: 7,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946 : 5,519 = 5,519 : x
  2. Step 2: Convert to fraction form
    3,946/5,519 = 5,519/x
  3. Step 3: Cross multiply
    3,946x = 5,519 × 5,519
  4. Step 4: Simplify right side
    3,946x = 30,459,361
  5. Step 5: Solve for x
    x = 30,459,361/3,946
  6. Step 6: Final answer
    x = 7,719.05

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.